From: Octavian Purdila octavian.purdila@intel.com

There are several instances where a pskb_copy or __pskb_copy is immediately followed by an skb_clone.

Add a couple of new functions to allow the copy skb to be allocated from the fclone cache and thus speed up subsequent skb_clone calls.

Cc: Alexander Smirnov alex.bluesman.smirnov@gmail.com Cc: Dmitry Eremin-Solenikov dbaryshkov@gmail.com Cc: Marek Lindner mareklindner@neomailbox.ch Cc: Simon Wunderlich sw@simonwunderlich.de Cc: Antonio Quartulli antonio@meshcoding.com Cc: Marcel Holtmann marcel@holtmann.org Cc: Gustavo Padovan gustavo@padovan.org Cc: Johan Hedberg johan.hedberg@gmail.com Cc: Arvid Brodin arvid.brodin@alten.se Cc: Patrick McHardy kaber@trash.net Cc: Pablo Neira Ayuso pablo@netfilter.org Cc: Jozsef Kadlecsik kadlec@blackhole.kfki.hu Cc: Lauro Ramos Venancio lauro.venancio@openbossa.org Cc: Aloisio Almeida Jr aloisio.almeida@openbossa.org Cc: Samuel Ortiz sameo@linux.intel.com Cc: Jon Maloy jon.maloy@ericsson.com Cc: Allan Stephens allan.stephens@windriver.com Cc: Andrew Hendry andrew.hendry@gmail.com Cc: Eric Dumazet edumazet@google.com Reviewed-by: Christoph Paasch christoph.paasch@uclouvain.be Signed-off-by: Octavian Purdila octavian.purdila@intel.com Signed-off-by: David S. Miller davem@davemloft.net --- compat.h | 6 ++++++ distributed-arp-table.c | 2 +- network-coding.c | 2 +- 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/compat.h b/compat.h index 28f4cfe..ed5b815 100644 --- a/compat.h +++ b/compat.h @@ -440,4 +440,10 @@ static int __batadv_interface_kill_vid(struct net_device *dev, __be16 proto,\

#endif /* < KERNEL_VERSION(3, 14, 0) */

+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 16, 0) + +#define pskb_copy_for_clone pskb_copy + +#endif /* < KERNEL_VERSION(3, 16, 0) */ + #endif /* _NET_BATMAN_ADV_COMPAT_H_ */ diff --git a/distributed-arp-table.c b/distributed-arp-table.c index b7406e0..b598111 100644 --- a/distributed-arp-table.c +++ b/distributed-arp-table.c @@ -595,7 +595,7 @@ static bool batadv_dat_send_data(struct batadv_priv *bat_priv, if (!neigh_node) goto free_orig;

- tmp_skb = pskb_copy(skb, GFP_ATOMIC); + tmp_skb = pskb_copy_for_clone(skb, GFP_ATOMIC); if (!batadv_send_skb_prepare_unicast_4addr(bat_priv, tmp_skb, cand[i].orig_node, packet_subtype)) { diff --git a/network-coding.c b/network-coding.c index 40a2fc4..8d04d17 100644 --- a/network-coding.c +++ b/network-coding.c @@ -1344,7 +1344,7 @@ static void batadv_nc_skb_store_before_coding(struct batadv_priv *bat_priv, struct ethhdr *ethhdr;

/* Copy skb header to change the mac header */ - skb = pskb_copy(skb, GFP_ATOMIC); + skb = pskb_copy_for_clone(skb, GFP_ATOMIC); if (!skb) return;